/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
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** modification, are permitted provided that the following conditions are
** met:
**   * Redistributions of source code must retain the above copyright
**     notice, this list of conditions and the following disclaimer.
**   * Redistributions in binary form must reproduce the above copyright
**     notice, this list of conditions and the following disclaimer in
**     the documentation and/or other materials provided with the
**     distribution.
**   * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
**     of its contributors may be used to endorse or promote products derived
**     from this software without specific prior written permission.
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#ifndef GLWIDGET_H
#define GLWIDGET_H

#include <QWindow>
#include <QtWidgets>
#include <QGLWidget>

#include "simplerenderer.h"
class Renderer;

class GLWidget : public QWindow
{
    Q_OBJECT

public:
    enum RotationDir { DirLeft, DirRight, DirUp, DirDown };

    explicit GLWidget(QString objectModelPath, QWindow *parent = 0);
    ~GLWidget();

    QSize minimumSizeHint() const;
    QSize sizeHint() const;
    void rotateBy(int xAngle, int yAngle, int zAngle);
    void setClearColor(const QColor &color);
    void setObjectModel(QString path);
    void initialize();

signals:
    void clicked();

protected:
    void timerEvent(QTimerEvent* event);
    void wheelEvent(QWheelEvent* event);
    void keyPressEvent(QKeyEvent* event);
    //void mousePressEvent(QMouseEvent *event);
    //void mouseMoveEvent(QMouseEvent *event);
    //void mouseReleaseEvent(QMouseEvent *event);

private slots:
    void rotateOneStep();

private:
    void makeObject();
    QColor clearColor;
    QPoint lastPos;
    int xRot;
    int yRot;
    int zRot;
    SimpleRenderer* m_renderer;
    QString  m_objectModelPath;
    QGLContext *m_context;
    RotationDir m_rotationDir;

#ifdef QT_OPENGL_ES_2
    QGLShaderProgram *program;
#endif
};

#endif
